code: def get_table_names(
      cls,
      database: Database,
      inspector: Inspector,
      schema: Optional[str],
  ) -> set[str]:
      return inspector.get_table_names(schema)
  
imports: import contextlib
  import re
  import threading
  from re import Pattern
  from typing import Any, Callable, List, NamedTuple, Optional
  from flask_babel import gettext
  from sqlalchemy.engine.reflection import Inspector
  from superset.constants import TimeGrain
  from superset.db_engine_specs.base import BaseEngineSpec
  from superset.errors import SupersetErrorType
  from superset.models.core import Database
  from superset.models.sql_lab import Query
label_desc: Use image node_id 1 for calling the OcientEngineSpec obj's underlying member method code with example usage: obj.get_table_names(cls, database, inspector, schema) and returns: inspector